apparently some guys made a patch to create the J-League, and now it's fully playable .
J-League Fully Playable - Data Download (6.0.3)
DATABASE
http://files.filefront.com/jleague1_updatezip/;5042638;;/fileinfo.html
LOGOS & STUFF
http://files.filefront.com/jleague_picysrar/;5031541;;/fileinfo.html
credits to these people (from readme)
wireframebox - Creating all the data
Stevenhp1987 - For making the league playable
Momotaro - Update & Fix the data of J-1 again (Up to Feb, 2006)
PS. C-League is replaced in this patch.
J-League Fully Playable - Data Download (6.0.3)
DATABASE
http://files.filefront.com/jleague1_updatezip/;5042638;;/fileinfo.html
LOGOS & STUFF
http://files.filefront.com/jleague_picysrar/;5031541;;/fileinfo.html
credits to these people (from readme)
wireframebox - Creating all the data
Stevenhp1987 - For making the league playable
Momotaro - Update & Fix the data of J-1 again (Up to Feb, 2006)
PS. C-League is replaced in this patch.